Automate community bundles creation

[clobrano]

Why we need this PR

The special Medik8s .github repository contains a reusable workflow to automate the creation of OKD and K8S bundle. This PR is needed to use this automation in NHC repository.

Changes made

• Add Makefile target for generating OKD bundle
• Add community-release GitHub worfklow
• Merge community-release into release workflow

The last two commits are intended to show how the reusable workflow can be used standalone, or integrated inside the already available release workflow (which build and push operator and bundle images to QUAY) via input selector.

Which issue(s) this PR fixes

ECOPROJECT-1578

Test plan

Tested locally via nektos/act

TODO

• [ ] displayName shall report "Community Edition" in both OKD and K8s

[openshift-ci[bot]]

Skipping CI for Draft Pull Request. If you want CI signal for your change, please convert it to an actual PR. You can still manually trigger a test run with /test all

[clobrano]

This CR is about GitHub actions and doesn't really need e2e tests. I'll keep it as draft to avoid running the CI, but it is ready for review :bow:

[razo7]

/lgtm

[clobrano]

/hold

Before proceeding, I will add the "Community Edition" substring to displayName in both OKD and K8s (only on K8s at the moment)

[clobrano]

/unhold

Ready again for review

needs https://github.com/medik8s/.github/pull/7

[openshift-ci[bot]]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: clobrano, slintes

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Needs approval from an approver in each of these files: - ~~[OWNERS](https://github.com/medik8s/node-healthcheck-operator/blob/main/OWNERS)~~ [clobrano,slintes] Approvers can indicate their approval by writing `/approve` in a comment Approvers can cancel approval by writing `/approve cancel` in a comment

[clobrano]

/retest